{"instruction": "You are an expert in event argument extraction. Please extract event arguments and their roles from the input that conform to the schema definition, which already includes event trigger words. If an argument does not exist, return NAN or an empty dictionary. Please respond in the format of a JSON string.", "schema": [{"event_type": "discover vulnerability", "arguments": ["vulnerable system version", "vulnerable system owner", "time", "common vulnerabilities and exposures", "discoverer", "capabilities", "vulnerability", "supported platform", "vulnerable system"]}], "input": "Microsoft also patched CVE -2018-8141 ( Windows Kernel Information Disclosure Vulnerability ) and CVE -2018-8170 ( Windows Image Elevation of Privilege Vulnerability ) , for which exploitation details became public ."}
{"discover vulnerability": []}